added function to add tags to iframe document head
merged master
Added new feature to settings to resolve GitHub issue 13.
removed a folder variable from global context
added unarchiver tests
changed one of the unarchiver tests
fixed merge conflict in book.js settings
Merge pull request #87 from futurepress/sidebarReflow

Added new feature to settings to resolve GitHub issue 13.
File Split
split rendering up into renderer, render, layout
comments and js linted
merged in head tags
adjust image that are full height to account for font size
merged in remote